Design And Implementation Of Aircraft Collaborative Design Data Distribution System Based On DDS

The rapid development of Internet technology with its great convenience into a variety of production and living environment,and collaborative design,especially in the field of academic research hot topics.Cooperate with related technical design from the early has entered the complex production environment,and with its deployment scheme of data rich information transfer mode,makes the multi vendor to work together to complete large projects.However,the production environment of large-scale projects has their complexity,and the general data platform has obvious defects in the support of data transmission mode and information service quality.As a result,the international organization for object management(OMG)has proposed a general specification based on data distribution service(DDS),which is of great significance to solve the above problems.In this paper,based on the data distribution service,combined with the background of aircraft cooperative design,we design and implement a data distribution system based on DDS.The main work of this paper is as follows:(1)to verify the feasibility of the data distribution system based on the background and data of aircraft cooperative design.In-depth analysis of data distribution services related infrastructure,standards,developer documentation and source code organization module and architecture.(2)the data distribution system needs analysis,the design of the main functional modules and improved modules.According to the results of the requirements analysis of the overall system architecture design and process design.(3)the design and implementation of an aircraft application adapter based on JSON data exchange format.According to the characteristics of the original XML application adapter based on in-depth analysis,in order to improve the performance of excessive consumption of decoding and storage by the proposed application adapter based on JSON to solve the problem of data transmission in heterogeneous system is not unified(4)the design and Implementation Based on the compressed bloom filter(CBF)and quality of service(QoS)automatic discovery algorithm compatible.Using CBF instead of the original filter,effectively reduces the amount of data transmission in the network;use hash function less,reduced the complexity of calculation.We can get a smaller false alarm rate and improve the matching rate of the topic information.In addition,the design and implementation of QoS policy compatibility decision is greatly improved.(5)implementation of collaborative design of the main functions of data distribution system of aircraft based on DDS.At the present stage,the data distribution system based on DDS is realized in the environment of cooperative design,and the data are tested and tested.The experimental results show that good performance has been achieved in the optimization and improvement of the original system.